{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:53:38.429552", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2026-Jun-13_to_2026-Jun-15_114.0_49.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2026060000457}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "June 13 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 15 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 116347.36548121205}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["China", "Mongolia", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 49.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 114.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "114.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 110.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 117.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 50.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-06-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[111.5, 50.25], [111.75, 50.15], [112.0, 50.25], [112.25, 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49.68], [110.97, 50.03], [111.5, 50.25]]]]}, "2026-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[111.5, 50.25], [111.75, 50.15], [112.0, 50.25], [112.25, 50.15], [112.32, 50.18], [112.47, 50.53], [113.0, 50.75], [113.25, 50.65], [113.5, 50.75], [113.75, 50.65], [114.0, 50.75], [114.25, 50.65], [114.5, 50.75], [114.75, 50.65], [115.0, 50.75], [115.25, 50.65], [115.5, 50.75], [115.75, 50.65], [116.0, 50.75], [116.53, 50.53], [116.68, 50.18], [116.75, 50.15], [117.0, 50.25], [117.53, 50.03], [117.75, 49.5], [117.65, 49.25], [117.75, 49.0], [117.53, 48.47], [117.0, 48.25], [116.75, 48.35], [116.5, 48.25], [116.25, 48.35], [116.18, 48.32], [116.03, 47.97], [115.68, 47.82], [115.65, 47.75], [115.75, 47.5], [115.53, 46.97], [115.18, 46.82], [115.03, 46.47], [114.5, 46.25], [114.25, 46.35], [114.0, 46.25], [113.75, 46.35], [113.5, 46.25], [113.25, 46.35], [113.18, 46.32], [113.03, 45.97], [112.5, 45.75], [111.97, 45.97], [111.75, 46.5], [111.85, 46.75], [111.75, 47.0], 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9.982971445719443, 11.29661585489913]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.617255328103047, -6.092158783627487, -5.292210909765739]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.088246579472184, -6.988951513556799, -6.637659927715845]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5883819034930078, -1.8342501403860998, -1.6015682953392814]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7734397605003405, -2.1361424624401995, -2.0445216824746777]}}